I understand why you sent the email now. No one likes unfriendly criticism. Maybe a better email would have been...
Hey Angry Adultress Wineo -
Grace and I both believe I am an excellent father.
Go pound sand.
RTL
Good deal with the girl friend getting back to you. It means that you are not confused as much about where she is in the relationship. Something tells me that as time goes on and you are happily dating others that she will come around.